N-SING The nub of a situation, problem, or argument is the central and most basic part of it. 中心; 核心 ['the' N, usu N 'of' n]
That, I think, is the nub of the problem.
我想那才是问题的核心。
Here we reach the nub of the argument.
现在我们谈到了争论的关键部分。
Her nubs swing back and forth while she walks but they do not touch the ground.
她走路的时候前腿的部位会摆来摆去，不过不会触到地面。
Amazingly, it is held together just by the LEGO blocks' patented nubs, no glue was applied to the tower (unlike some of his other projects).
令人惊讶的是，它完全由乐高块自身的咬合结构来组合起来的，没有使用任何胶水(不像他的其他作品)。
NUBS is now globally searching for the dean who has international vision and leadership with high academic achievements in either economics or management.
南京大学商学院现招聘一名具有国际视野和领导能力、并在经济学或管理学领域有较高学术造诣的院长。
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